OAKLAND — A 23-year-old woman charged with murdering Alameda County Sheriff’s Office Explorer Karla Ramirez-Segoviano told police that she planned the killing over several days, according to court documents filed Monday.

Prosecutors on Monday charged Laura Rodgers, a former friend and co-worker of the victim, and Rodgers’ boyfriend, Curtys Entoine Taylor, with murder. Rodgers was also charged with a special allegation that she personally used a knife to kill.

Police say Rodgers and Ramirez-Segoviano knew each other for a few years, and formerly worked together at a Kentucky Fried Chicken in East Oakland. A possible motive for the killing has not been released, but police believe it was unrelated to her volunteer work as a police explorer.

Laura Rodgers

“The fact they planned to kill this poor girl shows how much disdain and malice the suspects had toward Karla,” Sheriff’s Office spokesman Sgt. J.D. Nelson said. “Hopefully, when this case is finally adjudicated, a judge will have the same disdain for them during sentencing.”

The 21-year-old San Leandro resident’s body was found on Thursday beaten, stabbed, burned, and discarded in a creek by the entrance of Arroyo Viejo Recreation Center in East Oakland.

Rodgers told police that she planned the murder and discussed it with her boyfriend beforehand, according to court documents.

Police said Rodgers persuaded Ramirez-Segoviano to pick her up and drive her to the park, where Taylor was waiting with a can of gasoline.

Curtys Entoine Taylor

Rodgers assaulted and stabbed Ramirez-Segoviano herself, and Taylor helped her by pouring gasoline over the victim, according to a probable clause declaration. Afterward, they drove away in the victim’s car. They threw the knife, gas can, the clothing Rodgers wore during the killing, and Ramirez-Segoviano’s car keys and other belongings in a dumpster at Hayward hotel, police said.